Gas burner



FIG. 1 is a right front perspective view of a gas burner showing my new design;

FIG. 2 is a right front perspective view thereof with the trigger mechanism depressed and in condition of use;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a top plan view thereof; and

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a gas burner, as shown. 